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    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>属性、颜色、其他</title>
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<body bgcolor="Gray">
    <a  id="u01" href="#" title="这是一个链接" class="t">链接</a><br>
    <img id="u02" src="baidu_logo.png" alt="百度logo" title="这是一个图片"><br>
    <input type="button" value="按钮类型的Input" >
    <input type="radio" id="" checked><br>
    <hr  width="200" align="left">
    <a href="../index.html">返回首页(上一级路径)</a><br>
    <a href="/index.html">返回首页(完全路径)</a><br>
    <img src="2.svg" alt="排行榜图标"><br>
    &nbsp;  -->空&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;格
    &amp; &copy; &reg;
    &lt; &gt;
    &percnt;
    <center>居中标签，不建议使用</center>
  

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